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Petroleum and related products — Determination of chlorine and bromine content — Wavelength-dispersive X-ray fluorescence spectrometry
petroleum products, synthetic oils and fluids, and additives for petroleum products (including used oils) that are
soluble in organic solvents of negligible or accurately known chlorine/bromine content. The method is applicable to
products or additives having chlorine contents in the range 0,0005 % (m/m) to 0,1000% (m/m), and bromine
contents in the range 0,0010 % (m/m) to 0,1000% (m/m). Other elements do not generally interfere, although lead
may interfere at contents above 0,1500 % (m/m) (see note 2).
NOTE 1 For the purposes of this International Standard, the term "% (m/m)" is used to represent the mass fraction of a
material.
NOTE 2 Used lubricants may pose particular problems due to the range of potentially interfering elements at relatively high
concentrations. For used lubricants generally, the lower limit of sensitivity may be 0,0050 % (m/m) even when the provisions of
the last paragraph of 9.3 are applied.
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